Robbie Erlin vs. Jack Kull — Career Comparison

Robbie Erlin built a career as a starting pitcher and Jack Kull as a reliever — different jobs with different demands — but on the metrics that apply to both, a comparison is still worth making. Jack Kull posted stronger surface numbers — ERA 3 and WHIP 2.667 compared to 4.87 and 1.297 for Robbie Erlin. By the career numbers, Jack Kull had the better of this cross-role comparison — though era context would sharpen the verdict.